package com.wyf.reggie.Filter;

import com.alibaba.fastjson.JSON;
import com.wyf.reggie.Entity.R;
import com.wyf.reggie.Util.BaseContext;
import lombok.extern.slf4j.Slf4j;
import org.springframework.util.AntPathMatcher;

import javax.servlet.*;
import javax.servlet.annotation.WebFilter;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.io.IOException;

@WebFilter(filterName = "LoginCheckFilter",urlPatterns = "/*")
@Slf4j
public class LoginCheckFilter implements Filter {

    public static final AntPathMatcher PATH_MATCHER=new AntPathMatcher();

    @Override
    public void doFilter(ServletRequest servletRequest, ServletResponse servletResponse, FilterChain filterChain) throws IOException, ServletException {
        HttpServletRequest request=(HttpServletRequest)servletRequest;
        HttpServletResponse response=(HttpServletResponse)servletResponse;
        String requestURI = request.getRequestURI();
        String[] urls=new String[]{"/employee/login","/employee/logout","/backend/**","/front/**","common/**","/user/sendMsg",
                "/user/login","/doc.html", "/webjars/**","/swagger-resources","/v2/api-docs"};
        boolean check = check(urls, requestURI);
        if(check) {
            filterChain.doFilter(request,response);
            return;
        }
        if(request.getSession().getAttribute("employee")!=null){
            BaseContext.setId((Long)request.getSession().getAttribute("employee"));
            filterChain.doFilter(request,response);
            return;
        }
        if(request.getSession().getAttribute("user")!=null){
            BaseContext.setId((Long)request.getSession().getAttribute("user"));
            filterChain.doFilter(request,response);
            return;
        }
        response.getWriter().write(JSON.toJSONString(R.error("NOTLOGIN")));
        return;
    }

    public boolean check(String[] urls,String requestURI){
        for(String url:urls){
            boolean match=PATH_MATCHER.match(url,requestURI);
            if(match){
                return true;
            }
        }
        return false;
    }
}
